Create README.md

README.md

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+---
+
+language: cs
+
+datasets:
+
+- common_voice
+
+tags:
+
+- audio
+
+- automatic-speech-recognition
+
+- speech
+
+- xlsr-fine-tuning-week
+
+license: apache-2.0
+
+model-index:
+
+- name: wav2vec2-large-xlsr-53-Czech by Mehdi Hosseini Moghadam
+
+  results:
+
+  - task: 
+
+      name: Speech Recognition
+
+      type: automatic-speech-recognition
+
+    dataset:
+
+      name: Common Voice cs
+
+      type: common_voice
+
+      args: cs
+
+    metrics:
+
+       - name: Test WER
+
+         type: wer
+
+         value:  27.047806
+
+---
+
+# wav2vec2-large-xlsr-53-Czech
+
+Fine-tuned [facebook/wav2vec2-large-xlsr-53](https://huggingface.co/facebook/wav2vec2-large-xlsr-53) in Czech using the [Common Voice](https://huggingface.co/datasets/common_voice)
+
+When using this model, make sure that your speech input is sampled at 16kHz.
+
+## Usage
+
+The model can be used directly (without a language model) as follows:
+
+```python
+
+import torch
+
+import torchaudio
+
+from datasets import load_dataset
+
+from transformers import Wav2Vec2ForCTC, Wav2Vec2Processor
+
+test_dataset = load_dataset("common_voice", "cs", split="test[:2%]")
+
+processor = Wav2Vec2Processor.from_pretrained("MehdiHosseiniMoghadam/wav2vec2-large-xlsr-53-Czech")
+
+model = Wav2Vec2ForCTC.from_pretrained("MehdiHosseiniMoghadam/wav2vec2-large-xlsr-53-Czech")
+
+resampler = torchaudio.transforms.Resample(48_000, 16_000)
+
+# Preprocessing the datasets.
+
+# We need to read the aduio files as arrays
+
+def speech_file_to_array_fn(batch):
+
+  speech_array, sampling_rate = torchaudio.load(batch["path"])
+
+  batch["speech"] = resampler(speech_array).squeeze().numpy()
+
+  return batch
+
+test_dataset = test_dataset.map(speech_file_to_array_fn)
+
+inputs = processor(test_dataset["speech"][:2], sampling_rate=16_000, return_tensors="pt", padding=True)
+
+with torch.no_grad():
+
+  logits = model(inputs.input_values, attention_mask=inputs.attention_mask).logits
+
+predicted_ids = torch.argmax(logits, dim=-1)
+
+print("Prediction:", processor.batch_decode(predicted_ids))
+
+print("Reference:", test_dataset["sentence"][:2])
+
+```
+
+## Evaluation
+
+The model can be evaluated as follows on the Czech test data of Common Voice.
+
+```python
+
+import torch
+
+import torchaudio
+
+from datasets import load_dataset, load_metric
+
+from transformers import Wav2Vec2ForCTC, Wav2Vec2Processor
+
+import re
+
+test_dataset = load_dataset("common_voice", "cs", split="test")
+
+wer = load_metric("wer")
+
+processor = Wav2Vec2Processor.from_pretrained("MehdiHosseiniMoghadam/wav2vec2-large-xlsr-53-Czech")
+
+model = Wav2Vec2ForCTC.from_pretrained("MehdiHosseiniMoghadam/wav2vec2-large-xlsr-53-Czech")
+
+model.to("cuda")
+
+chars_to_ignore_regex = '[\,\?\.\!\-\;\:\"\“\%\‘\”\�]'
+
+resampler = torchaudio.transforms.Resample(48_000, 16_000)
+
+# Preprocessing the datasets.
+
+# We need to read the aduio files as arrays
+
+def speech_file_to_array_fn(batch):
+
+  batch["sentence"] = re.sub(chars_to_ignore_regex, '', batch["sentence"]).lower()
+
+  
+
+  speech_array, sampling_rate = torchaudio.load(batch["path"])
+
+  
+
+  batch["speech"] = resampler(speech_array).squeeze().numpy()
+
+  
+
+  return batch
+
+test_dataset = test_dataset.map(speech_file_to_array_fn)
+
+# Preprocessing the datasets.
+
+# We need to read the aduio files as arrays
+
+def evaluate(batch):
+
+    inputs = processor(batch["speech"], sampling_rate=16_000, return_tensors="pt", padding=True)
+
+    
+
+    with torch.no_grad():
+
+    
+
+      logits = model(inputs.input_values.to("cuda"), attention_mask=inputs.attention_mask.to("cuda")).logits
+
+    
+
+    pred_ids = torch.argmax(logits, dim=-1)
+
+    
+
+    batch["pred_strings"] = processor.batch_decode(pred_ids)
+
+    
+
+    return batch
+
+result = test_dataset.map(evaluate, batched=True, batch_size=8)
+
+print("WER: {:2f}".format(100 * wer.compute(predictions=result["pred_strings"], references=result["sentence"])))
+
+```
+
+**Test Result**:  27.047806 %
+
+## Training
+
+The Common Voice `train`, `validation` datasets were used for training.